Thiotricha characias is a moth of the Gelechiidae family. It was described by Meyrick in 1918. It is found in southern India. The wingspan is 13-14 mm. The forewings are pale greyish-ochreous, with the dorsum in males slenderly suffused with fuscous. Therre is a slender very oblique blackish streak from near the dorsum in the middle, reaching two-thirds across the wing. The apical fourth is more or less infuscated, browner towards the termen and there is a whitish wedge-shaped mark on the tornus, and a dot on the costa opposite. A snow-white dot is found before the apex, partially edged with blackish, and a whitish dot on the termen beneath it. The hindwings are light grey, thinly scaled anteriorly and with a blackish apical dot.